Apparatus for the manufacture of salt



(No Model.)

C. F., A. L. 8v A. W. LAWTON. APPARATUS FOR THB MANUFAGTURE 0F SALT.

N5. 475,575. Patented May 24, 1892.

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NITED STATES PATENT OFFICE,

CHARLES E. LAWTON, ALBERT L. LAWTON, AND ARTHUR W. LAWTON, OF

' ROCHESTER, NEW YORK.

SPECIFICATION forming part of Letters Patent N 0. 475,575, dated May 24, 1892. Application filed April l, 1891. Serial No. 387,259. (No model.)

To all whom it may concern: be opened from time to time for the purpose Be it known that we, CHARLES F. LAWTON, of drawing olf the impurities which settle to ALBERT L. LAwToN, and ARTHUR W. LAW- the bottom of the vessel. TON, citizens of the United States, residing at Opening through the top wall of the cham- Rochester,in the county of Monroe and State ber A is a pipe p, which is preferably jack- 55 of New York, have invented certain new and eted with any suitable non-conducting mauseful Improvements in Apparatus for the yterial, and immediately below the mouth of Manufacture of Salt, of which the following is the pipe is a screen or air-filter n, which,`ow,-`f-`v a specification. ing to the great heat in the chamber A, will :o Our invention relates to the manufact-ure advisably be made of asbestus or other non- 6o of salt, and has for its object the cooling and combustible material. The space below the shapingof common salt from ahot fused state screen is divided into a series of compartinto hollow spherical drops of globules more ments or bins C C C2 C3 C4 by a series of vertior less line. This is carried out in a confined cal partitions, said bins or compartments havspace in the presence of common air or in the ing conical or inclined bottoms which are pro- 65 presence Aof any special gas or gases without vided with valved discharge-pipes c, as shown wasting the gas, the saving of the heat given in Fig. l. off from the cooling salt enabling the heat to D indicates a pump or blowing engine of be used either for the preliminary heating of any suitable or desired construction, which zo the salt which is to be fused or for heating the is mounted in a compartment or room sepa- 7o air which is for feeding the tire of the furnace rated from the interior of the chamber A. in which the salt is melted or fused. Connected with this pump or blowing engine In the drawings, Figure l is a longitudinal is a coil or manifold d, which extends back sectional view of one form of apparatus for and forth throughout the bins or compartcarrying out our invention, and Fig. 2 a dements C C', &c. At its upper end the pipe 75 tail view illustrating a slight modification. or manifold is provided with a valve b, by F.J/

A represents a long chamber constructed which the iiow of the air may be regulated of of brick and iron, and B a large vessel of incontrolled. fusible material, which receives the fused salt Connected with the coil or manifold d, at a 3o dil-@Ct from the furnace in which it is melted point beyond the valve b, is a reducing-pipe 8o or from an intermediate vessel, in which the q, which enters the bottom of'a small hopper molten salt is allowed to stand long enough E, arranged directly beneath the dischargeto settle the impurities. This vessel is prospout s. This hopper is provided with a snitvided with a vertically-movable valve or gate able discharge-pipe h, arranged in line with Z of infusible material, which is designed to the discharge end of pipe q, thereby forming 85 cover and uncover the upper end of the disan atomizer which, acting upon the fluid salt charge-spout s, which extends into the intepassing from the hopper E, forces said salt rior of the chamber A. The stem Z of this out through discharge-spout h and causes the valve is advisably made of iron or steel and salt to assume a globular form. Although the 4o coated on its outside with an infusible mateair from the pipe el is hot before it enters the no rial. Instead of this construction, however, atomizer, it is sufficiently cool torsolidify the two small iron tubes parallel and close todrops of fused salt blown from the atomizer. gether and connected at their lower ends by a The hot air from the atomizer, being still furfull-turn elbow may be used. Sucha double ther heated by contact with the fused liquid tubular stem can be kept from being affected salt in the'atomizer and the hot particles of 95 by the molten salt by circulating a stream of salt blown into the chamber A, passes upward water down through one tube and up through through the very large asbestus screen or filtheother. Ata point belowthe discharge-spout ter n into the pipe p, and thence to the lires the vessel B is provided with an outlet m, chamber of the salt-melting furnace or into 5o which is kept normally closed, but which may contact with the raw salt for the purpose 0f 100 giving to it a preliminary heating before it comes to the fusing-point. Vhere some other gas or mixture of gases than common air is used for 'filling the chamber A, then in place 5 of the atomizer E h q we employ a wheel k,

which,as shown in Fig. 2, is placed under the spout s. This Wheel has a broad liat periphery set with numerous paddles or blades projecting from its outer face and is made to rero volve rapidly by any suitable means. Under this arrangement the air-filter n is removed, and the air-heating pipes d d dare continued along and around inside of the chamber A to its top, and there back and forth overhead,

r 5 and finally into the pipe p, this latter pipe under these conditions having no direct connection with the wide gas-space in chamber A. The atomized salt falls into the row of bins C C', dac., Where it is cooled by the air zo passing through the coil or manifold d and by the current of air which passes around the -outside of the cone-shaped bottoms of the bins in the spaces g g g. The outside air enters this space through a hole O in the outside Wall of the chamber A, and after passing irder the bins passes through the strainer or tilt-erf into the blowing-engine D, from` which it is forced through the pipe d in the manner above stated.

The blower D will be fitted with two sets of valves, as is usual, so as to produce a continui ous current of hot air. The walls of the chamber A are made very thick and heavy so as to retain the heat, and where desired may be covered with an air and gas tight iron case,

as represented in the drawings.

While we have shown the chamber A as provided with a series of bins or compartments, We desire it to be understood that we 4o do not limit ourselves to such an arrange-` ment, as it is obvious that the said divisions may be dispensed with. The arrangement `bshown is, however, preferred, for the reason that it enables us to Withdraw at any time salt of different degrees of ineness, as it is apparent that the action of the atomizer will serve to automatically adj ust the salt according to its specific gravity into the respective bins or compartments.

Having thus described our invention,what we claim is- 1. In an apparatus for the manufacture of salt, the combination, with a chamber A, of a Vessel B, adapted to contain fused or melted salt, an atomizer located Within the chamber A, adapted to receive melted saltfrom the vessel B, a bloWing-engine,andacoil or manifold connected therewith and with the atomizer.

2. In an apparatus for the manufacture of salt, the combination, with a chamber A,pro vided with a series of salt-receptacles, of a vessel B, adapted to contain fused or melted salt, an atomizer located Within the chamber A, adapted to receive melted salt from vessel B, a blowing-engine, a coil or manifold connected therewith and with the atomizer, a series of passages around the bases of the saltreceptacles, an air-inlet O, communicating with the passages g, and a filter or screen f, separating the passages g from the air-inlet pipe of the blowing-engine.

3. In an apparatus for the manufacture of salt, the combination, with a vessel or chamber A, provided with a series of salt-receptacles, of a receptacle B, adapted to contain the fused salt and to discharge the same into the interior of the chamber A, means for trans forming the fused saltinto globular form, and an asbestus air-lter located in the upper'portion of the chamber A, as and for the purpose set forth.

4. In an apparatus for the manufacture of salt, the combination, with achamber A, proi vided with a series of receptacles C C', ttc.,

of a molten -salt vessel B, and an` atomzer adapted to receive the molten salt from vessel B and to discharge the same into the respective compartments, substantially as shown and described.

In Witness whereof We hereunto set our hands in the presence of two witnesses.

CHARLES F. LAWTON. ALBERT Il.' LAWTON. ARTHUR W, LAWTON. Witnesses:

E. F. TURK, D. C. BARNUM. 

